<template>
	<view class="cart-container" v-if="cart.length !== 0">
		<!--收货地址的组件  -->
		<my-address></my-address>
		<view class="cart-title">
		  <!-- 左侧的图标 -->
		  <uni-icons type="shop" size="18"></uni-icons>
		  <!-- 描述文本 -->
		  <text class="cart-title-text">购物车</text>
		</view>
		
		<!-- 商品列表区域 -->
		<uni-swipe-action>
			<block v-for="(goods, i) in cart" :key="i">
			<uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
				<my-goods :goods="goods" :show-radio="true" :show-num="true"  @radio-change="radioChangeHandler"  @num-change="numberChangeHandler"></my-goods>
			</uni-swipe-action-item>
			</block>
		</uni-swipe-action>
		 <!-- 结算区域 -->
		<my-settle></my-settle>
	</view>
	
	<!-- 空白购物车区域 -->
	  <view class="empty-cart" v-else>
	    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
	    <text class="tip-text">空空如也~</text>
	  </view>
</template>

<script>
// 导入自己封装的 mixin 模块
import badgeMix from '@/mixins/tabbar-badge.js'
import { mapState,mapMutations  } from 'vuex'
	export default {
		 // 将 badgeMix 混入到当前的页面中进行使用
		 mixins: [badgeMix],
		 computed: {
		     // 将 m_cart 模块中的 cart 数组映射到当前页面中使用
		     ...mapState('m_cart', ['cart']),
		   },
		data() {
			return {
				 options: [{
				      text: '删除', // 显示的文本内容
				      style: {
				        backgroundColor: '#C00000' // 按钮的背景颜色
				      }
				    }]
			};
		},
		methods: {
			...mapMutations('m_cart', ['updateGoodsState','updateGoodsCount','removeGoodsById']),
		  // 商品的勾选状态发生了变化
		  radioChangeHandler(e) {
		    this.updateGoodsState(e)
		  },
		  // 商品的数量发生了变化
		  numberChangeHandler(e) {
		    this.updateGoodsCount(e)
		  },
		  swipeActionClickHandler(goods){
			  this.removeGoodsById(goods.goods_id)
		  }
		}
	}
</script>

<style lang="scss">
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}

.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
